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Comparing jsr166/src/test/tck/CopyOnWriteArraySetTest.java (file contents):
Revision 1.1 by dl, Sun Aug 31 19:24:54 2003 UTC vs.
Revision 1.41 by jsr166, Tue May 8 00:25:33 2018 UTC

#	Line 1 | Line 1
1		/*
2	<	* Written by members of JCP JSR-166 Expert Group and released to the
3	<	* public domain. Use, modify, and redistribute this code in any way
4	<	* without acknowledgement. Other contributors include Andrew Wright,
5	<	* Jeffrey Hayes, Pat Fischer, Mike Judd.
2	>	* Written by Doug Lea with assistance from members of JCP JSR-166
3	>	* Expert Group and released to the public domain, as explained at
4	>	* http://creativecommons.org/publicdomain/zero/1.0/
5	>	* Other contributors include Andrew Wright, Jeffrey Hayes,
6	>	* Pat Fisher, Mike Judd.
7		*/
8
9	<	import junit.framework.*;
10	<	import java.util.*;
11	<	import java.util.concurrent.*;
9	>	import java.util.ArrayList;
10	>	import java.util.Arrays;
11	>	import java.util.Collection;
12	>	import java.util.Iterator;
13	>	import java.util.NoSuchElementException;
14	>	import java.util.Set;
15	>	import java.util.concurrent.CopyOnWriteArraySet;
16
17	<	public class CopyOnWriteArraySetTest extends TestCase{
18	<
17	>	import junit.framework.Test;
18	>
19	>	public class CopyOnWriteArraySetTest extends JSR166TestCase {
20		public static void main(String[] args) {
21	<	junit.textui.TestRunner.run (suite());
21	>	main(suite(), args);
22		}
17	–
23		public static Test suite() {
24	<	return new TestSuite(CopyOnWriteArraySetTest.class);
24	>	class Implementation implements CollectionImplementation {
25	>	public Class<?> klazz() { return CopyOnWriteArraySet.class; }
26	>	public Set emptyCollection() { return new CopyOnWriteArraySet(); }
27	>	public Object makeElement(int i) { return i; }
28	>	public boolean isConcurrent() { return true; }
29	>	public boolean permitsNulls() { return true; }
30	>	}
31	>	return newTestSuite(
32	>	CopyOnWriteArraySetTest.class,
33	>	CollectionTest.testSuite(new Implementation()));
34		}
35
36	<	static CopyOnWriteArraySet fullSet(int n){
37	<	CopyOnWriteArraySet a = new CopyOnWriteArraySet();
36	>	static CopyOnWriteArraySet<Integer> populatedSet(int n) {
37	>	CopyOnWriteArraySet<Integer> a = new CopyOnWriteArraySet<>();
38		assertTrue(a.isEmpty());
39	<	for (int i = 0; i < n; ++i)
40	<	a.add(new Integer(i));
41	<	assertFalse(a.isEmpty());
39	>	for (int i = 0; i < n; i++)
40	>	a.add(i);
41	>	assertEquals(n == 0, a.isEmpty());
42		assertEquals(n, a.size());
43		return a;
44		}
45
46	+	static CopyOnWriteArraySet populatedSet(Integer[] elements) {
47	+	CopyOnWriteArraySet<Integer> a = new CopyOnWriteArraySet<>();
48	+	assertTrue(a.isEmpty());
49	+	for (int i = 0; i < elements.length; i++)
50	+	a.add(elements[i]);
51	+	assertFalse(a.isEmpty());
52	+	assertEquals(elements.length, a.size());
53	+	return a;
54	+	}
55	+
56	+	/**
57	+	* Default-constructed set is empty
58	+	*/
59	+	public void testConstructor() {
60	+	CopyOnWriteArraySet a = new CopyOnWriteArraySet();
61	+	assertTrue(a.isEmpty());
62	+	}
63	+
64	+	/**
65	+	* Collection-constructed set holds all of its elements
66	+	*/
67	+	public void testConstructor3() {
68	+	Integer[] ints = new Integer[SIZE];
69	+	for (int i = 0; i < SIZE - 1; ++i)
70	+	ints[i] = new Integer(i);
71	+	CopyOnWriteArraySet a = new CopyOnWriteArraySet(Arrays.asList(ints));
72	+	for (int i = 0; i < SIZE; ++i)
73	+	assertTrue(a.contains(ints[i]));
74	+	}
75	+
76		/**
77	<	*  Test to verify addAll correctly adds each element from the given collection
77	>	* addAll adds each non-duplicate element from the given collection
78		*/
79	<	public void testAddAll(){
80	<	CopyOnWriteArraySet full = fullSet(3);
81	<	Vector v = new Vector();
82	<	v.add(new Integer(3));
83	<	v.add(new Integer(4));
84	<	v.add(new Integer(5));
41	<	full.addAll(v);
42	<	assertEquals(6, full.size());
79	>	public void testAddAll() {
80	>	Set full = populatedSet(3);
81	>	assertTrue(full.addAll(Arrays.asList(three, four, five)));
82	>	assertEquals(6, full.size());
83	>	assertFalse(full.addAll(Arrays.asList(three, four, five)));
84	>	assertEquals(6, full.size());
85		}
86
87		/**
88	<	*  Test to verify addAllAbsent adds each element from the given collection that did not
47	<	*  already exist in the List
88	>	* addAll adds each non-duplicate element from the given collection
89		*/
90	<	public void testAddAll2(){
91	<	CopyOnWriteArraySet full = fullSet(3);
92	<	Vector v = new Vector();
93	<	v.add(new Integer(3));
94	<	v.add(new Integer(4));
95	<	v.add(new Integer(1)); // will not add this element
96	<	full.addAll(v);
56	<	assertEquals(5, full.size());
90	>	public void testAddAll2() {
91	>	Set full = populatedSet(3);
92	>	// "one" is duplicate and will not be added
93	>	assertTrue(full.addAll(Arrays.asList(three, four, one)));
94	>	assertEquals(5, full.size());
95	>	assertFalse(full.addAll(Arrays.asList(three, four, one)));
96	>	assertEquals(5, full.size());
97		}
98
99		/**
100	<	*  Test to verify addIfAbsent will not add the element if it already exists in the list
100	>	* add will not add the element if it already exists in the set
101		*/
102	<	public void testAdd2(){
103	<	CopyOnWriteArraySet full = fullSet(3);
104	<	full.add(new Integer(1));
105	<	assertEquals(3, full.size());
102	>	public void testAdd2() {
103	>	Set full = populatedSet(3);
104	>	full.add(one);
105	>	assertEquals(3, full.size());
106		}
107
108		/**
109	<	*  test to verify addIfAbsent correctly adds the element when it does not exist in the list
109	>	* add adds the element when it does not exist in the set
110		*/
111	<	public void testAdd3(){
112	<	CopyOnWriteArraySet full = fullSet(3);
113	<	full.add(new Integer(3));
114	<	assertTrue(full.contains(new Integer(3)));
111	>	public void testAdd3() {
112	>	Set full = populatedSet(3);
113	>	full.add(three);
114	>	assertTrue(full.contains(three));
115		}
116
117		/**
118	<	*  Test to verify clear correctly removes all elements from the list
118	>	* clear removes all elements from the set
119		*/
120	<	public void testClear(){
121	<	CopyOnWriteArraySet full = fullSet(3);
122	<	full.clear();
123	<	assertEquals(0, full.size());
120	>	public void testClear() {
121	>	Collection full = populatedSet(3);
122	>	full.clear();
123	>	assertEquals(0, full.size());
124	>	assertTrue(full.isEmpty());
125		}
126
127		/**
128	<	*  Test to verify contains returns the correct values
128	>	* contains returns true for added elements
129		*/
130	<	public void testContains(){
131	<	CopyOnWriteArraySet full = fullSet(3);
132	<	assertTrue(full.contains(new Integer(1)));
133	<	assertFalse(full.contains(new Integer(5)));
130	>	public void testContains() {
131	>	Collection full = populatedSet(3);
132	>	assertTrue(full.contains(one));
133	>	assertFalse(full.contains(five));
134		}
135
136	+	/**
137	+	* Sets with equal elements are equal
138	+	*/
139		public void testEquals() {
140	<	CopyOnWriteArraySet a = fullSet(3);
141	<	CopyOnWriteArraySet b = fullSet(3);
140	>	CopyOnWriteArraySet a = populatedSet(3);
141	>	CopyOnWriteArraySet b = populatedSet(3);
142		assertTrue(a.equals(b));
143		assertTrue(b.equals(a));
144	+	assertTrue(a.containsAll(b));
145	+	assertTrue(b.containsAll(a));
146		assertEquals(a.hashCode(), b.hashCode());
147	<	a.add(new Integer(-1));
147	>	assertEquals(a.size(), b.size());
148	>
149	>	a.add(m1);
150	>	assertFalse(a.equals(b));
151	>	assertFalse(b.equals(a));
152	>	assertTrue(a.containsAll(b));
153	>	assertFalse(b.containsAll(a));
154	>	b.add(m1);
155	>	assertTrue(a.equals(b));
156	>	assertTrue(b.equals(a));
157	>	assertTrue(a.containsAll(b));
158	>	assertTrue(b.containsAll(a));
159	>	assertEquals(a.hashCode(), b.hashCode());
160	>
161	>	Object x = a.iterator().next();
162	>	a.remove(x);
163		assertFalse(a.equals(b));
164		assertFalse(b.equals(a));
165	<	b.add(new Integer(-1));
165	>	assertFalse(a.containsAll(b));
166	>	assertTrue(b.containsAll(a));
167	>	a.add(x);
168		assertTrue(a.equals(b));
169		assertTrue(b.equals(a));
170	+	assertTrue(a.containsAll(b));
171	+	assertTrue(b.containsAll(a));
172		assertEquals(a.hashCode(), b.hashCode());
173	+	assertEquals(a.size(), b.size());
174	+
175	+	CopyOnWriteArraySet empty1 = new CopyOnWriteArraySet(Arrays.asList());
176	+	CopyOnWriteArraySet empty2 = new CopyOnWriteArraySet(Arrays.asList());
177	+	assertTrue(empty1.equals(empty1));
178	+	assertTrue(empty1.equals(empty2));
179	+
180	+	assertFalse(empty1.equals(a));
181	+	assertFalse(a.equals(empty1));
182	+
183	+	assertFalse(a.equals(null));
184		}
185
110	–
186		/**
187	<	*  Test to verify containsAll returns the correct values
187	>	* containsAll returns true for collections with subset of elements
188		*/
189	<	public void testContainsAll(){
190	<	CopyOnWriteArraySet full = fullSet(3);
191	<	Vector v = new Vector();
192	<	v.add(new Integer(1));
193	<	v.add(new Integer(2));
194	<	assertTrue(full.containsAll(v));
195	<	v.add(new Integer(6));
196	<	assertFalse(full.containsAll(v));
189	>	public void testContainsAll() {
190	>	Collection full = populatedSet(3);
191	>	assertTrue(full.containsAll(full));
192	>	assertTrue(full.containsAll(Arrays.asList()));
193	>	assertTrue(full.containsAll(Arrays.asList(one)));
194	>	assertTrue(full.containsAll(Arrays.asList(one, two)));
195	>	assertFalse(full.containsAll(Arrays.asList(one, two, six)));
196	>	assertFalse(full.containsAll(Arrays.asList(six)));
197	>
198	>	CopyOnWriteArraySet empty1 = new CopyOnWriteArraySet(Arrays.asList());
199	>	CopyOnWriteArraySet empty2 = new CopyOnWriteArraySet(Arrays.asList());
200	>	assertTrue(empty1.containsAll(empty2));
201	>	assertTrue(empty1.containsAll(empty1));
202	>	assertFalse(empty1.containsAll(full));
203	>	assertTrue(full.containsAll(empty1));
204	>
205	>	try {
206	>	full.containsAll(null);
207	>	shouldThrow();
208	>	} catch (NullPointerException success) {}
209		}
210
211		/**
212	<	*  Test to verify isEmpty returns the correct values
212	>	* isEmpty is true when empty, else false
213		*/
214	<	public void testIsEmpty(){
215	<	CopyOnWriteArraySet empty = new CopyOnWriteArraySet();
216	<	CopyOnWriteArraySet full = fullSet(3);
130	<	assertTrue(empty.isEmpty());
131	<	assertFalse(full.isEmpty());
214	>	public void testIsEmpty() {
215	>	assertTrue(populatedSet(0).isEmpty());
216	>	assertFalse(populatedSet(3).isEmpty());
217		}
218
219		/**
220	<	*  Test to verify iterator() returns an iterator containing the elements of the list
220	>	* iterator() returns an iterator containing the elements of the
221	>	* set in insertion order
222		*/
223	<	public void testIterator(){
224	<	CopyOnWriteArraySet full = fullSet(3);
225	<	Iterator i = full.iterator();
226	<	int j;
227	<	for(j = 0; i.hasNext(); j++)
228	<	assertEquals(j, ((Integer)i.next()).intValue());
229	<	assertEquals(3, j);
223	>	public void testIterator() {
224	>	Collection empty = new CopyOnWriteArraySet();
225	>	assertFalse(empty.iterator().hasNext());
226	>	try {
227	>	empty.iterator().next();
228	>	shouldThrow();
229	>	} catch (NoSuchElementException success) {}
230	>
231	>	Integer[] elements = new Integer[SIZE];
232	>	for (int i = 0; i < SIZE; i++)
233	>	elements[i] = i;
234	>	shuffle(elements);
235	>	Collection<Integer> full = populatedSet(elements);
236	>
237	>	Iterator it = full.iterator();
238	>	for (int j = 0; j < SIZE; j++) {
239	>	assertTrue(it.hasNext());
240	>	assertEquals(elements[j], it.next());
241	>	}
242	>	assertIteratorExhausted(it);
243		}
244
245	<	public void testIteratorRemove () {
246	<	CopyOnWriteArraySet full = fullSet(3);
245	>	/**
246	>	* iterator of empty collection has no elements
247	>	*/
248	>	public void testEmptyIterator() {
249	>	assertIteratorExhausted(new CopyOnWriteArraySet().iterator());
250	>	}
251	>
252	>	/**
253	>	* iterator remove is unsupported
254	>	*/
255	>	public void testIteratorRemove() {
256	>	Collection full = populatedSet(3);
257		Iterator it = full.iterator();
258		it.next();
259		try {
260		it.remove();
261	<	fail("should throw");
262	<	}
154	<	catch (UnsupportedOperationException success) {}
261	>	shouldThrow();
262	>	} catch (UnsupportedOperationException success) {}
263		}
264
265	<	public void testToString(){
266	<	CopyOnWriteArraySet full = fullSet(3);
265	>	/**
266	>	* toString holds toString of elements
267	>	*/
268	>	public void testToString() {
269	>	assertEquals("[]", new CopyOnWriteArraySet().toString());
270	>	Collection full = populatedSet(3);
271		String s = full.toString();
272	<	for (int i = 0; i < 3; ++i) {
273	<	assertTrue(s.indexOf(String.valueOf(i)) >= 0);
274	<	}
275	<	}
276	<
272	>	for (int i = 0; i < 3; ++i)
273	>	assertTrue(s.contains(String.valueOf(i)));
274	>	assertEquals(new ArrayList(full).toString(),
275	>	full.toString());
276	>	}
277
278		/**
279	<	*  Test to verify removeAll correctly removes all elements from the given collection
279	>	* removeAll removes all elements from the given collection
280		*/
281	<	public void testRemoveAll(){
282	<	CopyOnWriteArraySet full = fullSet(3);
283	<	Vector v = new Vector();
284	<	v.add(new Integer(1));
285	<	v.add(new Integer(2));
286	<	full.removeAll(v);
175	<	assertEquals(1, full.size());
281	>	public void testRemoveAll() {
282	>	Set full = populatedSet(3);
283	>	assertTrue(full.removeAll(Arrays.asList(one, two)));
284	>	assertEquals(1, full.size());
285	>	assertFalse(full.removeAll(Arrays.asList(one, two)));
286	>	assertEquals(1, full.size());
287		}
288
289	<
290	<	public void testRemove(){
291	<	CopyOnWriteArraySet full = fullSet(3);
292	<	full.remove(new Integer(1));
293	<	assertFalse(full.contains(new Integer(1)));
294	<	assertEquals(2, full.size());
289	>	/**
290	>	* remove removes an element
291	>	*/
292	>	public void testRemove() {
293	>	Collection full = populatedSet(3);
294	>	full.remove(one);
295	>	assertFalse(full.contains(one));
296	>	assertEquals(2, full.size());
297		}
298
299		/**
300	<	*  Test to verify size returns the correct values
300	>	* size returns the number of elements
301		*/
302	<	public void testSize(){
303	<	CopyOnWriteArraySet empty = new CopyOnWriteArraySet();
304	<	CopyOnWriteArraySet full = fullSet(3);
305	<	assertEquals(3, full.size());
306	<	assertEquals(0, empty.size());
302	>	public void testSize() {
303	>	Collection empty = new CopyOnWriteArraySet();
304	>	Collection full = populatedSet(3);
305	>	assertEquals(3, full.size());
306	>	assertEquals(0, empty.size());
307		}
308
309		/**
310	<	*  Test to verify toArray returns an Object array containing all elements from the list
310	>	* toArray() returns an Object array containing all elements from
311	>	* the set in insertion order
312		*/
313	<	public void testToArray(){
314	<	CopyOnWriteArraySet full = fullSet(3);
315	<	Object[] o = full.toArray();
316	<	assertEquals(3, o.length);
317	<	assertEquals(0, ((Integer)o[0]).intValue());
318	<	assertEquals(1, ((Integer)o[1]).intValue());
319	<	assertEquals(2, ((Integer)o[2]).intValue());
313	>	public void testToArray() {
314	>	Object[] a = new CopyOnWriteArraySet().toArray();
315	>	assertTrue(Arrays.equals(new Object[0], a));
316	>	assertSame(Object[].class, a.getClass());
317	>
318	>	Integer[] elements = new Integer[SIZE];
319	>	for (int i = 0; i < SIZE; i++)
320	>	elements[i] = i;
321	>	shuffle(elements);
322	>	Collection<Integer> full = populatedSet(elements);
323	>
324	>	assertTrue(Arrays.equals(elements, full.toArray()));
325	>	assertSame(Object[].class, full.toArray().getClass());
326		}
327
328		/**
329	<	*  test to verify toArray returns an Integer array containing all elements from the list
329	>	* toArray(Integer array) returns an Integer array containing all
330	>	* elements from the set in insertion order
331		*/
332	<	public void testToArray2(){
333	<	CopyOnWriteArraySet full = fullSet(3);
334	<	Integer[] i = new Integer[3];
335	<	i = (Integer[])full.toArray(i);
336	<	assertEquals(3, i.length);
337	<	assertEquals(0, i[0].intValue());
338	<	assertEquals(1, i[1].intValue());
339	<	assertEquals(2, i[2].intValue());
340	<	}
332	>	public void testToArray2() {
333	>	Collection empty = new CopyOnWriteArraySet();
334	>	Integer[] a;
335	>
336	>	a = new Integer[0];
337	>	assertSame(a, empty.toArray(a));
338	>
339	>	a = new Integer[SIZE / 2];
340	>	Arrays.fill(a, 42);
341	>	assertSame(a, empty.toArray(a));
342	>	assertNull(a[0]);
343	>	for (int i = 1; i < a.length; i++)
344	>	assertEquals(42, (int) a[i]);
345
346	+	Integer[] elements = new Integer[SIZE];
347	+	for (int i = 0; i < SIZE; i++)
348	+	elements[i] = i;
349	+	shuffle(elements);
350	+	Collection<Integer> full = populatedSet(elements);
351
352	+	Arrays.fill(a, 42);
353	+	assertTrue(Arrays.equals(elements, full.toArray(a)));
354	+	for (int i = 0; i < a.length; i++)
355	+	assertEquals(42, (int) a[i]);
356	+	assertSame(Integer[].class, full.toArray(a).getClass());
357
358	<	// Exception tests
358	>	a = new Integer[SIZE];
359	>	Arrays.fill(a, 42);
360	>	assertSame(a, full.toArray(a));
361	>	assertTrue(Arrays.equals(elements, a));
362	>
363	>	a = new Integer[2 * SIZE];
364	>	Arrays.fill(a, 42);
365	>	assertSame(a, full.toArray(a));
366	>	assertTrue(Arrays.equals(elements, Arrays.copyOf(a, SIZE)));
367	>	assertNull(a[SIZE]);
368	>	for (int i = SIZE + 1; i < a.length; i++)
369	>	assertEquals(42, (int) a[i]);
370	>	}
371
372		/**
373	<	*  Test to verify toArray throws an ArrayStoreException when the given array
374	<	*  can not store the objects inside the list
373	>	* toArray throws an ArrayStoreException when the given array can
374	>	* not store the objects inside the set
375		*/
376	<	public void testToArray_ArrayStoreException(){
377	<	try{
378	<	CopyOnWriteArraySet c = new CopyOnWriteArraySet();
379	<	c.add("zfasdfsdf");
380	<	c.add("asdadasd");
376	>	public void testToArray_ArrayStoreException() {
377	>	CopyOnWriteArraySet c = new CopyOnWriteArraySet();
378	>	c.add("zfasdfsdf");
379	>	c.add("asdadasd");
380	>	try {
381		c.toArray(new Long[5]);
382	<	fail("Object[] toArray(Object[]) should throw ArrayStoreException");
383	<	}catch(ArrayStoreException e){}
382	>	shouldThrow();
383	>	} catch (ArrayStoreException success) {}
384	>	}
385	>
386	>	/**
387	>	* A deserialized/reserialized set equals original
388	>	*/
389	>	public void testSerialization() throws Exception {
390	>	Set x = populatedSet(SIZE);
391	>	Set y = serialClone(x);
392	>
393	>	assertNotSame(y, x);
394	>	assertEquals(x.size(), y.size());
395	>	assertEquals(x.toString(), y.toString());
396	>	assertTrue(Arrays.equals(x.toArray(), y.toArray()));
397	>	assertEquals(x, y);
398	>	assertEquals(y, x);
399	>	}
400	>
401	>	/**
402	>	* addAll is idempotent
403	>	*/
404	>	public void testAddAll_idempotent() throws Exception {
405	>	Set x = populatedSet(SIZE);
406	>	Set y = new CopyOnWriteArraySet(x);
407	>	y.addAll(x);
408	>	assertEquals(x, y);
409	>	assertEquals(y, x);
410		}
411
412		}

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